黄铁矿热电性特征在冀西石湖金矿床中的应用

Application of thermoelectric properties of pyrite in gold exploration in the Shihu gold deposit, western Hebei

介绍了黄铁矿热电性测量方法在石湖金矿找矿实践中的应用。黄铁矿是主要的载金矿物,可分为4个阶段。热电性测试研究得出如下结论,黄铁矿的导型组合从Ⅰ!Ⅳ成矿阶段的变化为P<N!P≥N!P>N!P≤N;在矿化地段,由上而下,αP减小,αN增大;P%减小,N%增大;用电导型分布(P%)和αP均值所作矿物学填图反映的结果基本一致,从中可以取得有关黄铁矿的形成温度、矿体的相对埋深、矿体特征,深部远景等标型信息。

This paper introduces the apphcation of the pyrite thermoelectric property measurements in gold exploration of the Shihu gold deposit, Pyrite is the main gold-carrying mineral. Four gold mineralization stages may be distinguished, The thermoelectric type assemblage of pyrite is P〈N=〉P≥N=〉P〉N=〉P≤N from mineralization stages Ⅰ to Ⅳ. In the mineralization area, from the top downward when （P and P% decrease, （N and N% increase, which in the main coincides with the results of mineralogical mapping by using the distribution of pyrite type （P%） and the mean of the thermoelectric coefficient （P. Some typomorphic information such as formation temperatures of pyrite, relative burial depths of orebodies, characteristics of oreboclies and prospects of the deep part may be obtained according to thermoelectric properties of pyrite.